Hello 
I`ve got an expierence with theese guys https://www.buzzfeed.com/lilydada43
http://forums.qrecall.com/user/profile/306592.page
https://www.prohealth.com/blogs/wellness/new-uthever-nmn-clinical-trial-finds-nmn-increases-nad-by-49-reduces-insulin-resistance-and-improves-quality-of-life#comment-5820895548
 that were mentioned before. 
And I watned to claim thanks!